Knopite
A variety of Perovskite
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About Knopite
Formula:
(Ca,Ce,Na)(Ti,Fe)O3
Name:
After A. Knop (1828-1893), German mineralogist who discovered the niobian variety of perovskite ('dysanalyte').
A variety of perovskite rich in cerium.
Originally described from Långörsholmen, Alnö, Sundsvall, Medelpad, Sweden.
Originally described from Långörsholmen, Alnö, Sundsvall, Medelpad, Sweden.
Unique Identifiers
Mindat ID:
2228 (as Knopite)
3166 (as Perovskite)
3166 (as Perovskite)
Long-form identifier:
mindat:1:1:2228:2 (as Knopite)
mindat:1:1:3166:6 (as Perovskite)
mindat:1:1:3166:6 (as Perovskite)
Similar Names
| Neapite | A synonym of 'Apatite nephelinolite' |
Chemistry of Knopite
Mindat Formula:
(Ca,Ce,Na)(Ti,Fe)O3
Element Weights:
Other Language Names for Knopite
Common Associates
Associations Based on Photo Data:
| 2 photos of Knopite associated with Perovskite | CaTiO3 |
| 1 photo of Knopite associated with Calcite | CaCO3 |
| 1 photo of Knopite associated with Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
| 1 photo of Knopite associated with Magnetite | Fe2+Fe3+2O4 |
| 1 photo of Knopite associated with Schorlomite | Ca3Ti2(SiO4)(Fe3+O4)2 |
| 1 photo of Knopite associated with Titanite | CaTi(SiO4)O |
| 1 photo of Knopite associated with Cafetite | CaTi2O5 · H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Knopite
mindat.org URL:
https://www.mindat.org/min-2228.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Knopite
Reference List:
Localities for Knopite
Showing 7 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Canada | |
| Ellsworth et al. (1925) |
Greenland | |
| Aðalsteinsdóttir et al. (2025) |
Russia | |
| World of Stones 95: 5-6 |
| Arzamastsev et al. (2006) | |
| Bea et al. (2001) |
Sweden | |
| Holmquist (1894) +1 other reference |
|
Afrikanda complex, Murmansk Oblast, Russia